Making simple proofs simpler
classification
💻 cs.MS
cs.DM
keywords
openpartitiontreeblockblockschainscod09acod09b
read the original abstract
An open partition \pi{} [Cod09a, Cod09b] of a tree T is a partition of the vertices of T with the property that, for each block B of \pi, the upset of B is a union of blocks of \pi. This paper deals with the number, NP(n), of open partitions of the tree, V_n, made of two chains with n points each, that share the root.
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